Split reactor and reactor coil

Abstract

The utility model provides a split reactor and a reactor coil, and belongs to the field of reactors. The split reactor comprises reactor coils, a wire inlet conductor, a first wire outlet conductor and a second wire outlet conductor which are nested inside and outside and arranged at intervals, the reactor coils comprise a first coil and a second coil which are insulated from each other and are each of a spiral winding structure, and the first coil and the second coil are nested inside and outside; the wire inlet ends of the first coil and the second coil are both conductively connected with the wire inlet conductor, the wire outlet ends of the first coil and the second coil are conductively connected with the first wire outlet conductor and the second wire outlet conductor respectively, and the electric reactor coil further comprises a packaging structure wrapping the outer sides of the first coil and the second coil. The reactor coil is the reactor coil in the split reactor. According to the split reactor, the coils used for being connected to different loops are arranged in pairs and integrated in one reactor coil, so that the size of the split reactor is reduced, and material consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electric reactors, especially relates to split reactor and electric reactor coil. BACKGROUND

[0002] The general split reactor contains two coil units arranged up and down, the two coil units share a common incoming line end, and the two coil units are each provided with a separate outgoing line end, so that the split reactor can meet the requirement of simultaneously accessing two loops.

[0003] However, the conventional split reactor has poor coupling effect and is difficult to meet the use requirement. The tight coupling split reactor disclosed in the Chinese Utility Model Patent with the authorization announcement No. CN208908179U is provided with two groups of coils, the two groups of coils are arranged alternately from inside to outside, all the coils are connected with the incoming line conductor, and the coils in the same group are connected to the same outgoing line conductor. In the tight coupling split reactor, each coil is provided with an encapsulation structure, and a gap is left between the two adjacent coils inside and outside for ventilation and heat dissipation, and an insulating spacer is arranged in the gap. Compared with the conventional split reactor, the tight coupling split reactor has a lower height but a larger radial dimension, so that the volume of both the conventional split reactor and the tight coupling split reactor is large, which is difficult to meet the use requirement in the place with limited installation space.

[0004] In addition, the tight coupling split reactor adopts the structure that the two groups of coils are alternately nested inside and outside, and a gap is further arranged between the adjacent coils, so that the diameter of the coil farther outside is larger, and the material consumption of the coil conductor and the encapsulation structure is also larger, resulting in a higher cost. TECHNICAL PROBLEM

[0005] One of the purposes of the utility model is to provide a split reactor to solve the technical problems that the volume of the split reactor in the prior art is large and difficult to adapt to small space installation, and the material consumption is large and the cost is high.

[0006] Another purpose of the utility model is to provide an electric reactor coil to solve the above technical problems.

[0007] To achieve the above purpose, the technical scheme of the split reactor provided by the utility model is as follows:

[0008] The utility model provides a split reactor, including the nested and interval arrangement of reactor coil, incoming line conductor, first outgoing line conductor and second outgoing line conductor, and the reactor coil includes the first coil and the second coil that mutually insulate and are all spiral winding structure, and the first coil and the second coil are nested and arranged, and the incoming end of first coil and second coil is all with incoming line conductor electrically connected, and the outgoing end of first coil and second coil is respectively with first outgoing line conductor and second outgoing line conductor electrically connected, and the reactor coil further includes the package structure that covers the outside of first coil and second coil.

[0009] As further improvement, an insulation layer is arranged between the first coil and the second coil for separating the first coil and the second coil.

[0010] As further improvement, the insulation layer is a flexible insulation material winding layer.

[0011] As further improvement, the inner and outer relative positions of the first coil and the second coil in each reactor coil are the same.

[0012] As further improvement, an insulation support is arranged between the first outgoing line conductor and the second outgoing line conductor, and the first outgoing line conductor, the second outgoing line conductor and the insulation support constitute an outgoing line assembly, and the incoming line conductor and the outgoing line assembly are located at two ends of the reactor coil along the winding axis of the first coil and the second coil.

[0013] As further improvement, the winding axis of the first coil and the second coil is vertically arranged, the incoming line conductor is located at the upper end of the reactor coil, and the outgoing line assembly is located at the lower end of the reactor coil.

[0014] As further improvement, the first outgoing line conductor and the second outgoing line conductor are arranged along the winding axis direction of the first coil and the second coil, and one of the first outgoing line conductor and the second outgoing line conductor is fixedly connected with the reactor coil.

[0015] The split reactor provided by the utility model is an improvement on the prior art. The first coil and the second coil for being connected with the first outgoing line conductor and the second outgoing line conductor respectively are arranged in pairs and integrated in one reactor coil, and share one package structure, so that on the one hand, the structure of the split reactor can be more compact and smaller in size, and the split reactor can be better applied in places with limited installation space; on the other hand, the package structure can also be effectively reduced, thereby reducing the material consumption of the package structure and reducing the manufacturing cost of the split reactor.

[0016] To achieve the above object, the technical scheme of the reactor coil provided by the utility model is:

[0017] A reactor coil includes a first coil and a second coil, both of which are helically wound. The first coil and the second coil are nested inside each other and an insulating layer is provided between them. The input ends of the first coil and the second coil are both used to connect to an input conductor, and the output ends of the first coil and the second coil are respectively used to connect to a first output conductor and a second output conductor. The reactor coil also includes an encapsulation structure covering the outside of the first coil and the second coil.

[0018] As a further improvement, an insulating layer is provided between the first coil and the second coil to separate the first coil and the second coil.

[0019] As a further improvement, the insulation layer is a flexible insulating material winding layer.

[0020] The beneficial effects are as follows: The reactor coil provided by this utility model is a pioneering invention. This reactor coil integrates a first coil and a second coil for connection to the first and second outgoing conductors respectively, and the first and second coils share a common encapsulation structure. This allows for a more compact and smaller structure in the split reactor using this reactor coil, making it more suitable for applications with limited installation space. Furthermore, the encapsulation structure in the split reactor using this reactor coil can be effectively reduced, thereby reducing material consumption and lowering the manufacturing cost of the split reactor. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of one embodiment of the split reactor in this utility model;

[0022] Figure 2 This is a top view of one embodiment of the split reactor in this utility model;

[0023] Figure 3 This is a simplified structural diagram of one embodiment of the split reactor in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Incoming conductor; 2. First outgoing conductor; 3. Second outgoing conductor; 4. Insulating support strip; 5. First coil; 6. Second coil; 7. Insulating layer; 8. Encapsulation structure; 9. Insulating support body; 10. Heat dissipation channel. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the embodiments.

[0027] To address the problems in the prior art, the basic concept of this utility model is to pair up the coils used to connect to different circuits and integrate them into a single reactor coil, thereby reducing the size of the split reactor and reducing material consumption.

[0028] Specific embodiments of the split reactor provided by this utility model:

[0029] See appendix Figure 1 and attached Figure 2 The split reactor includes a reactor coil, an incoming conductor 1, a first outgoing conductor 2, and a second outgoing conductor 3.

[0030] Multiple reactor coils are arranged, nested inside and outside each other and spaced apart. An insulating support strip 4 is fixed between two adjacent reactor coils. The insulating support strip 4 is used to connect the two adjacent reactor coils and maintain the distance between the two adjacent reactor coils, thereby forming a heat dissipation channel 10 between the two adjacent reactor coils for ventilation and heat dissipation.

[0031] The reactor coil includes a first coil 5, a second coil 6, and an encapsulation structure 8. Both the first coil 5 and the second coil 6 are helically wound in the same direction, with their winding axes vertical. The first coil 5 and the second coil 6 are nested within each other, and their relative positions are the same in all reactor coils; that is, the first coil 5 is either always on the inside or always on the outside. Specifically, in this embodiment, the first coil 5 in the same reactor coil is located inside the second coil 6. The wires used to wind the first coil 5 and the second coil 6 are insulated flat wires with a rectangular cross-section, allowing for a tighter arrangement during winding and improving the structural compactness of the reactor coil.

[0032] An insulating layer 7 is provided between the first coil 5 and the second coil 6 to separate them. The insulating layer 7 is a flexible insulating material winding layer. In this embodiment, the flexible insulating material winding layer is specifically obtained by winding DMD, and the number of winding layers is four, so as to obtain a better insulation effect between the first coil 5 and the second coil 6. In other embodiments, the flexible insulating material winding layer can also be other insulating films or insulating strips.

[0033] When manufacturing the reactor coil, the inner first coil 5 is wound first, then a flexible insulating material winding layer is wound around the outside of the first coil 5, and finally the outer second coil 6 is wound. After the coil is wound, it is filled and impregnated with resin, and finally sealed with glass yarn to form an encapsulation structure 8. The encapsulation structure 8 is existing technology and will not be described in detail here.

[0034] The incoming conductor 1, the first outgoing conductor 2, and the second outgoing conductor 3 are all aluminum busbars, and each has six radially arranged connecting arms, which are connected together at the center of the aluminum busbar.

[0035] The incoming conductor 1 is located above the reactor coil and is bound to the reactor coil by glass wire. The incoming ends of the first coil 5 and the second coil 6 are both located above it and welded to the incoming conductor 1, so as to realize the conductive connection between the first coil 5 and the second coil 6.

[0036] The first outgoing conductor 2 and the second outgoing conductor 3 are both located below the reactor coils, and are arranged vertically at intervals. Specifically, the first outgoing conductor 2 is located above the second outgoing conductor 3, and an insulating support 9 is fixedly connected between them. The first outgoing conductor 2, the second outgoing conductor 3, and the insulating support 9 constitute the outgoing assembly. The first outgoing conductor 2 is bound to each reactor coil by glass fiber. A connecting plate is welded onto the second outgoing conductor 3, and the second outgoing conductor 3 is fixedly connected to an insulator used to support the reactor coils through the connecting plate.

[0037] The lead-out end of the first coil 5 is located at its lower end and is welded to the first lead-out conductor 2 to achieve a conductive connection between the first coil 5 and the first lead-out conductor 2; the lead-out end of the second coil 6 is located at its lower end and is welded to the second lead-out conductor 3 to achieve a conductive connection between the second coil 6 and the second lead-out conductor 3.

[0038] See appendix Figure 3 In this split reactor, the first coil 5 and the second coil 6 can be connected to two system circuits at the same time. The first coils 5 in different reactor coils are connected in parallel with each other, and the second coils 6 in different reactor coils are connected in parallel with each other. Therefore, it can play the same role as a conventional split reactor.

[0039] Compared to conventional split reactors with coils stacked vertically in the prior art, the split reactor provided by this invention effectively reduces the height; and since the first coil 5 and the second coil 6 are set in the same encapsulation structure 8, the radial dimension of a single reactor coil does not change significantly, so that the radial dimension of the entire split reactor will not be significantly larger than that of a conventional split reactor with coils stacked vertically.

[0040] Compared to the tightly coupled split reactors in the prior art where the coils are simply nested inside and outside, the split reactor provided by this utility model has a significantly smaller radial dimension than the tightly coupled split reactors in the prior art because it integrates the first coil 5 and the second coil 6 within one reactor coil.

[0041] In summary, the split reactor provided by this utility model has a more compact structure and smaller size, making it more suitable for situations with limited installation space and offering greater application flexibility.

[0042] Furthermore, in the split reactor provided by this utility model, the first coil 5 and the second coil 6 in the same reactor coil share a common encapsulation structure 8, so the consumption of encapsulation material can be greatly reduced, thereby reducing the manufacturing cost of the split reactor.

[0043] In this embodiment, the cross-sectional shape of the reactor coil is circular. In other embodiments, the cross-sectional shape of the reactor coil can be adjusted as needed.

[0044] In this embodiment, the inner and outer relative positions of the first coil 5 and the second coil 6 are unified, which ensures good mutual inductance between the two coils and increases the reactance value. Under the same usage requirements, the split reactor provided by this utility model has fewer turns per coil compared to the conventional split reactor with coils stacked vertically in the prior art. Calculations show that the number of turns can be reduced by about 5%, which can effectively reduce costs. Of course, in other embodiments, the inner and outer relative positions of the first coil 5 and the second coil 6 can also be inconsistent. In this case, compared to the conventional split reactor with coils stacked vertically in the prior art, it can still enhance mutual inductance and increase the reactance value.

[0045] The number of turns of the first coil 5 and the second coil 6 may be non-integer. The six connecting arms of the incoming conductor 1, the first outgoing conductor 2, and the second outgoing conductor 3 can be evenly distributed in the circumferential direction. The first coil 5 and the second coil 6 can be connected to suitable connecting arms when not having an integer number of turns, thus facilitating the winding of the first coil 5 and the second coil 6. In this embodiment, the first outgoing conductor and the second outgoing conductor 3 are arranged at intervals along the winding axis of the first coil 5 and the second coil 6, ensuring that both the first outgoing conductor 2 and the second outgoing conductor 3 can be arranged at intervals in the circumferential direction. In other embodiments, the first outgoing conductor 2 and the second outgoing conductor 3 can also be arranged in the same plane. Both the first outgoing conductor 2 and the second outgoing conductor 3 include three connecting arms, and each connecting arm is fixedly mounted on the same insulating support 9. In this case, the arrangement of the first outgoing conductor 2 and the second outgoing conductor 3 can be the same as the arrangement of the first split outgoing arm and the second split outgoing arm in, for example, the Chinese utility model patent with authorization announcement number CN207542051U, which will not be elaborated here.

[0046] In this embodiment, the incoming conductor 1 is positioned above the reactor coil, and the outgoing assembly is positioned below the reactor coil. This is primarily because, during use, the incoming conductor 1, once connected, is generally not modified. However, the first outgoing conductor 2 and the second outgoing conductor 3 in the outgoing assembly can be connected to different system circuits, thus requiring multiple wiring adjustments during use. Positioning the outgoing assembly below the reactor coil facilitates wiring operations and improves ease of use. Of course, in other embodiments, the incoming conductor 1 can be positioned below the reactor coil, and the outgoing assembly above the reactor coil without affecting the performance of the split reactor.

[0047] In this embodiment, the first outgoing conductor 2 and the second outgoing conductor 3 are connected together by an insulating support 9, which facilitates the input and output of the first coil 5 and the second coil 6. In other embodiments, the first outgoing conductor 2 and the second outgoing conductor 3 can be respectively located above and below the reactor coil. To facilitate wiring, two incoming conductors 1 need to be provided, located above and below the reactor coil respectively. One incoming conductor 1 and the first outgoing conductor 2 are used to connect the input and output ends of the first coil 5, and the other incoming conductor 1 and the second outgoing conductor 3 are used to connect the input and output ends of the second coil 6.

[0048] The flexible insulating material winding layer is easy to process and produce. In other embodiments, the insulating layer 7 can also be made of rigid material, such as resin filling between the first coil 5 and the second coil 6, or it can be a rigid insulating cylinder. The insulating cylinder is sleeved on the outside of the first coil 5 after the first coil 5 is wound. The insulating cylinder can be made of polymer material or ceramic material.

[0049] Since the wires used to wind the first coil 5 and the second coil 6 are self-insulated, the insulation layer 7 does not need to be set separately if the usage requirements are met.

[0050] Specific embodiments of the reactor coil provided by this utility model:

[0051] The reactor coil is the same as the reactor coil in the above-described split reactor embodiment, and will not be described in detail here.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A split reactor comprising a reactor coil, an incoming conductor, a first outgoing conductor and a second outgoing conductor which are nested and spaced apart, characterized in that, The reactor coil comprises a first coil and a second coil which are mutually insulated and each have a spiral winding structure, the first coil and the second coil are nested inside and outside, the incoming wire ends of the first coil and the second coil are each in conductive connection with an incoming wire conductor, the outgoing wire ends of the first coil and the second coil are respectively in conductive connection with a first outgoing wire conductor and a second outgoing wire conductor, and the reactor coil further comprises an encapsulation structure wrapped outside the first coil and the second coil.

2. Splitting reactor according to claim 1, characterized in that An insulation layer is arranged between the first coil and the second coil to separate the first coil and the second coil.

3. Splitting reactor according to claim 2, characterized in that The insulation layer is a flexible insulation material winding layer.

4. Splitting reactor according to any of claims 1-3, characterized in that, The inner and outer relative positions of the first coil and the second coil in each reactor coil are the same.

5. Splitting reactor according to any of claims 1-3, characterized in that, An insulation support body is arranged between the first outgoing wire conductor and the second outgoing wire conductor, the first outgoing wire conductor, the second outgoing wire conductor and the insulation support body form an outgoing wire assembly, and the incoming wire conductor and the outgoing wire assembly are respectively located at two ends of the reactor coil in the winding axis direction of the first coil and the second coil.

6. Splitting reactor according to claim 5, characterized in that The winding axis of the first coil and the second coil is vertically arranged, the incoming wire conductor is located at the upper end of the reactor coil, and the outgoing wire assembly is located at the lower end of the reactor coil.

7. The split reactor of claim 5, wherein, The first outgoing wire conductor and the second outgoing wire conductor are arranged in a spaced manner along the winding axis direction of the first coil and the second coil, and one of the first outgoing wire conductor and the second outgoing wire conductor is fixedly connected with the reactor coil.

8. A reactor coil, characterized by The reactor coil comprises a first coil and a second coil which are mutually insulated and each have a spiral winding structure, the first coil and the second coil are nested inside and outside, the incoming wire ends of the first coil and the second coil are each in conductive connection with an incoming wire conductor, the outgoing wire ends of the first coil and the second coil are respectively in conductive connection with a first outgoing wire conductor and a second outgoing wire conductor, and the reactor coil further comprises an encapsulation structure wrapped outside the first coil and the second coil.

9. The reactor coil of claim 8, wherein, An insulation layer is arranged between the first coil and the second coil to separate the first coil and the second coil.

10. The reactor coil of claim 9, wherein, The insulation layer is a flexible insulation material winding layer.

Images